1. Green Manufacturing: Adopting Energy Efficiency in Manufacturing Supply Chains -Dangote Cement Strategy By Pabby Paramjit Director, Dangote Academy

2. SCOPE This Presentation addresses 3 key Areas 1 Cursory view of environmental impact of cement manufacturing 2 Opportunities for green manufacturing in the cement industry and trends 3 Green Manufacturing strategies in Dangote Cement

3. Cursory view of environmental impact of cement manufacturing The cement industry impacts the environment in different ways Air and Dust Emissions Like most energy intensive industries, cement plants generate air emissions like CO2, NOx and SOx According to the recent publication of the Cement Sustainability Initiative (CSI), cement industry is responsible for about 5% of all man- made CO2 emissions. Dust emission is also associated with material handling in cement plants

4. …Environmental impact of Cement Manufacturing Consumption of raw materials and fuels Large amounts of energy and materials are consumed in producing millions of tons of cement annually. This has some environmental consequences which must be addressed

5. …Environmental impact of Cement Manufacturing Impact on land and communities Quarrying of limestone, the main cement raw material has impact on land and settlements around the quarry Dust, noise and vehicular movements are all unavoidable consequences of large scale limestone quarrying Quarrying activities may sometimes affect biodiversity and the ecosystem

6. Opportunities for green manufacturing in the cement industry Environmentally friendly products & emission control technologies Climate Protection & Emission Reduction Emission reduction products like low carbon cements (blended) are produced to reduce the environmental impact of cement manufacturing. Dust emission prevention equipment like electrostatic precipitators and bag house filters have been designed with improved efficiency to control dust Electrostatic Precipitator for Dust Control

7. Green manufacturing in cement industry Fuels & Waste Material Recycling The cement kiln provides opportunities for disposing many waste materials as alternative energy sources. This has the advantages of waste reduction, conservation of fossil fuels and emission reduction.

8. Blended Cement and use of Clinker Replacement Materials (CRM) Production of blended cement using the CRM option has provided a remarkable avenue for green manufacturing in the cement industry Materials like slag, fly ash, pozzolans, limestone and others are used as CRM in cement This has led to reduced specific energy consumption, utilization of waste materials and environmental protection …Green manufacturing in cement industry

9. Green Manufacturing Strategy in Dangote Cement Technology Options Dangote Cement plants are new, hence provides us with the opportunity to select “state of art” technologies We specifically select technologies and equipment based on energy efficiencies and environmental consideration Our scale of production has added advantage of energy optimization in our plants Robotic process control lab

10. Energy Efficiency in our plants Our kiln system is equipped with Mechanical Flow Regulator for optimal heat recovery in the clinker cooler …Green Manufacturing Strategy in Dangote Cement

11. The pre-calciner Kiln technology is designed for energy efficiency. This also provides opportunity to use Alternative Fuels Resources (AFR) in the pre- calciner Rotary Kiln Preheater String without calciner Calciner …Green Manufacturing Strategy in Dangote Cement

12. All our grinding operations are done with Vertical Roller Mills using grinding aids, this come with high output and low specific energy consumption in comparison with older plants using ball mills. Adoption of CRM option (L/S cement) results in lower energy consumption per ton of cement. All these help in environmental preservation Energy efficient grinding technology of Vertical Roller Mills …Green Manufacturing Strategy in Dangote Cement

13. Environmental Initiatives in Dangote Cement Robust Environmental Management System Environmental Policy Targeted at Prevention of pollution Compliance to legal & other requirements/ Standards Conducive environment NIS ISO 14001:2014 Certified Efficient Emission Control Designed particulate emission limit: 30mg/ Nm3 Actual values: 15-20mg/Nm3 Nigerian standard: 100mg/Nm3 High Efficiency Electrostatic precipitator for dust control

14. Other Specific Environmental Initiative Tree Planting Water spraying to suppress dust emission Environmental monitoring & reporting Community resettlement Quarry rehabilitation plan Aligning future leaders of the company to green manufacturing …Environmental Initiatives in Dangote Cement

15. Tree planting activities & grassing..Environmental Initiatives in Dangote Cement

16. Dust Suppression in the Mines …Environmental Initiatives in Dangote Cement

17. Environmental Monitoring & Reporting Gas Analyzer Dust Monitor Lux meter Ambient Gas Analyzer Noise level meter

18. New Oyo Community After Re-settlement Old Oyo Community Mining Community Resettlement to avoid noise pollution …Environmental Initiatives in Dangote Cement

19. Our Dangote Academy enables us to align the future leaders of the Company to Environmental preservation …Environmental Initiatives in Dangote Cement

20. Thank you.